|Data capture from engineering drawings - Skidmore, Cary Bradford.|
This volume was digitized and made accessible online due to deterioration of the original print copy.
Keywords: Computer-aided design
|Version control and management in computer-aided design databases - Ahmed, Rafi|
Keywords: Computer-aided design; Database management
|The decomposition of an arbitrary three-dimensional planar polygon into a set of convex polygons / [by] Jeffrey H. Potts, Robert B. McGhee [and]Michael J. Zyda. - Potts, Jeffrey Hal.;McGhee, Robert (Robert B.);Zyda, Michael J.|
Title from cover
Keywords: SOFTWARE ENGINEERING; COMPUTER-AIDED DESIGN
|Re-engineering portabililty of the Computer Aided Prototyping System (CAPS) - Yetkin, Recep Erdinc|
Thesis advisors, LuQi, Valdis Berzins
Keywords: SOFTWARE ENGINEERING; COMPUTER AIDED DESIGN
Computer Aided Design (CAD) programs are used by engineers and architects, but new simplified CAD programs have come out for personal computers that let individual consumers use the power of CAD software. This program looks at several examples including Generic CADD, FastCAD, Dimensions, VersaCAD, Dream House, and Car Builder. Also a look at the standard for high end CAD programs, AutoCAD. Originally broadcast in 1988.
Keywords: CAD; computer aided design; architecture
|Conflict Cause Identification in Web-based concurrent engineering design - Jiang, Tianhong,|
Keywords: Concurrent engineering--Simulation models; Computer-aided design
|Designing computer circuits with a computer (Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 72) - Leichner, Gene H|
"September 17, 1956"
Keywords: Computers; Computer-aided design; Electronic digital computers
|A design management and job assignment system - Badr, Salah M.;Berzinbs, Valdis Andris.|
Keywords: DATA BASES; JOB ANALYSIS; COMPUTER AIDED DESIGN
|Documentation for CAPS User Interface and Graphic Editor - Bell, Antionette Carin|
Thesis advisors, LuQi and Valdis Berzins
Keywords: COMPUTER PROGRAMS; COMPUTER AIDED DESIGN; COMPUTER GRAPHICS
|A CAD model for the inductive strip in finline - Knorr, Jeffrey B.|
Final report for the period 1 July 87 -31 March 88.--Cover.
Keywords: MICROWAVE CIRCUITS; MILLIMETER WAVES; COMPUTER-AIDED DESIGN
|Do Workstations Dream of Virtual Sheep? - Chris Rust|
RUST, C. (1995) When Workstations Dream of Virtual Sheep. co-design - Interdisciplinary Journal of Design and Contextual Studies, July 1996
Keywords: Computer Aided Design; virtual worlds; Zeke Conran
|Computational Aerothermodynamic Design Issues for Hypersonic Vehicles - Gnoffo, Peter A.|
A brief review of the evolutionary progress in computational aerothermodynamics is presented. The current status of computational aerothermodynamics is then discussed, with emphasis on its capabilities and limitations for contributions to the design process of hypersonic vehicles. Some topics to be highlighted include: (1) aerodynamic coefficient predictions with emphasis on high temperature gas effects; (2) surface heating and temperature predictions for thermal protection system (TPS) design i...
Keywords: COMPUTER AIDED DESIGN; METADATA; NAVIGATION; VIRTUAL PROPERTIES
|Multiple-valued programmable logic array minimization by simulated annealing - Dueck, Gerard W.;Earle, Robert C.;Tirumalai, Parthasarathy.;Butler, Jon T.|
Title from cover
Keywords: ANNEALING; COMPUTER AIDED DESIGN; COMPUTERIZED SIMULATION; LOGIC CIRCUITS; COMPUTER PROGRAMS
|Further Examination of the Vibratory Loads Reduction Results from the NASA/ARMY/MIT Active Twist Rotor Test - Wilbur, Matthew L.|
The vibration reduction capabilities of a model rotor system utilizing controlled, strain-induced blade twisting are examined. The model rotor blades, which utilize piezoelectric active fiber composite actuators, were tested in the NASA Langley Transonic Dynamics Tunnel using open-loop control to determine the effect of active-twist on rotor vibratory loads. The results of this testing have been encouraging, and have demonstrated that active-twist rotor designs offer the potential for significan...
Keywords: COMPUTER AIDED DESIGN; COMPUTER PROGRAMS; ENGINEERING MANAGEMENT; PROCEDURES
|Rule based design optimization of cradle structures using frequency domain structural synthesis - Gordis, Joshua H.;Healy, Anthony J.;Cook, Ronald E.|
Keywords: ARTIFICIAL INTELLIGENCE; SUBMARINES; STRUCTURAL ANALYSIS; COMPUTER AIDED DESIGN; NAVAL VESSELS
|Widebanding techniques for VHF antennas - II - Thiem, Keem B.;Janaswamy, Ramakrishna.|
Title from cover
Keywords: ANTENNAS; ELECTRONIC SWITCHING; PIN DIODES; COMPUTER AIDED DESIGN; ANTENNA CONFIGURATIONS
|Reasoning with assumptions, defeasibly, in model formulation - Bhargava, H. K. (Hemant K.);Krishnan, R. (Ramayya)|
Title from cover
Keywords: NONMONOTONIC REASONING; REASONING; COMPUTER-AIDED DESIGN; PROGRAMMING (MATHEMATICS)
|Computer-aided drafting for scenic and lighting designers : a training guide using the AUTOCAD drafting package and the Zenith Z-100 microcomputer - Hall, Delbert L|
Keywords: Computer-aided design; Stage lighting; Theaters--Stage-setting and scenery
|Proceedings - Workshop on Interactive Computing: CAE: Electrical Engineering Education (3rd : 1984 : University of Pittsburgh)|
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Keywords: Electrical engineering; Computer-aided design; Interactive computer systems
|A modal analysis of the violin using MSC/NASTRAN and PATRAN - Knott, George Anthony.|
Thesis (M.S. in Engineering Acoustics) Naval Postgraduate School, March 1987
Keywords: Computer-aided design; Finite element method--Computer programs; Computer simulation
|A finite difference method for predicting supersonic turbulent boundary layer flows with tangential slot injection - Miner, E. W.|
An implicit finite difference method has been applied to tangential slot injection into supersonic turbulent boundary layer flows. In addition, the effects induced by the interaction between the boundary layer displacement thickness and the external pressure field are considered. In the present method, three different eddy viscosity models have been used to specify the turbulent momentum exchange. One model depends on the species concentration profile and the species conservation equation has be...
Keywords: AIRCRAFT DESIGN; FINITE ELEMENT METHOD; COMPUTER AIDED DESIGN; FUSELAGES; STATIC TESTS; STRUCTURAL ANALYSIS
|Aeroheating Environments for a Mars Smart Lander - Edquist, Karl T.|
A proposed Mars Smart Lander is designed to reach the surface via lifting-body atmospheric entry (alpha = 16 deg) to within 10 km of the target site. CFD (computational fluid dynamics) predictions of the forebody aeroheating environments are given for a direct entry from a 2005 launch. The solutions were obtained using an 8-species gas in thermal and chemical nonequilibrium with a radiative-equilibrium wall temperature boundary condition...
Keywords: COMPUTATIONAL FLUID DYNAMICS; COMPUTER AIDED DESIGN; TRIANGULATION; APPLICATIONS PROGRAMS (COMPUTERS); COMPUTER PROGRAMMING; MANIFOLDS (MATHEMATICS); COMPUTATIONAL GRIDS
|An Experimental Evaluation of Oil Pumping Rings - Eusepi, M. W.|
The design and construction of a reciprocating test vehicle to be used in evaluating hydrodynamic oil pumping rings are discussed. In addition, experimental test data are presented for three pumping ring designs that were constructed from Tin-Based Babbitt (SAE 11), Bearing Bronze (SAE 660), and Mechanical Carbon Graphite (Union Carbide Grade CNF-J). Data of pumped flow rate versus delivered pressure, as well as friction loss, are reported for the following conditions: frequencies of 10, 35 and ...
Keywords: AIRCRAFT DESIGN; COMPUTER AIDED DESIGN; COMPUTER PROGRAMS; GENERAL AVIATION AIRCRAFT; AIRCRAFT CONFIGURATIONS; FIXED WINGS
|Enhancements to and Applications with the ''Unified'' Long-Term PSC Database - Fromm, Michael|
This report summaries the project team's activity during the period 1 January - 31 March 2004. It consists of a project plan, which was completed during this period and an indication of the completion status of each phase of the project. The intention of the investigative team is to closely follow the statement of work documented in our proposal. For this reason, the proposal may be referenced in this and upcoming status reports...
Keywords: SPACE SUITS; PORTABLE LIFE SUPPORT SYSTEMS; COMPUTER AIDED DESIGN; ASTRONAUTS; DRAWINGS; FABRICS; RADIATION PROTECTION; RADIATION SHIELDING
|The 1991 Canadian Census of Population experience with automated coding. - Jocelyn Y. Tourigny and Joanne Moloney.|
Census Year 1991
Keywords: Census 1991; Automation; Computer aided design; Computer programs; Surveys; Data quality
|Creation of High Resolution Terrain Models of Barringer Meteorite Crater (Meteor Crater) Using Photogrammetry and Terrestrial Laser Scanning Methods - Brown, Richard B.|
Barringer Meteorite Crater or Meteor Crater, AZ, has been a site of high interest for lunar and Mars analog crater and terrain studies since the early days of the Apollo-Saturn program. It continues to be a site of exceptional interest to lunar, Mars, and other planetary crater and impact analog studies because of its relatively young age (est. 50 thousand years) and well-preserved structure. High resolution (2 meter to 1 decimeter) digital terrain models of Meteor Crater in whole or in part wer...
Keywords: AIRCRAFT DESIGN; COMPUTER AIDED DESIGN; TAPERING; DRAG; SYSTEMS ANALYSIS; AIRCRAFT MODELS; THICKNESS
|Exhaust Gas Modeling Effects on Hypersonic Powered Simulation at Mach 10 - Tatum, Kenneth E.|
A numerical study was performed to investigate the accuracy and validity of cold-gas simulation of actual hot scramjet exhaust within a Mach 10 free stream over a representative single-stage-to-orbit airbreathing configuration. In particular, exhausts of various noncombusting chemistry models were studied to characterize their effects on the vehicle aftbody performance and the plume flow field definition...
Keywords: AIRCRAFT DESIGN; COMPUTER AIDED DESIGN; MULTIDISCIPLINARY DESIGN OPTIMIZATION; PARAMETERIZATION; COMPUTATIONAL GRIDS
|Study of a 300-kilowatt Rankine-cycle advanced nuclear-electric space-power system - Barna, G. J.|
System analysis of lithium-cooled Rankine cycle nuclear-electric space power unit
Keywords: COMPUTER PROGRAMS; LANGUAGE PROGRAMMING; COMPUTER AIDED DESIGN; COMPUTERS; MAN MACHINE SYSTEMS; ON-LINE PROGRAMMING; SYMBOLIC PROGRAMMING
|Prototyping hard real-time Ada systems in a classroom environment - Luqi.;Shing, Man-Tak.;Barnes, P.;Hughes, G.|
Title from cover
Keywords: ADA PROGRAMMING LANGUAGE; PROTOTYPES; REAL TIME; COMPUTER AIDED DESIGN; TEACHING METHODS
|Efficient algorithms for electronic CAD - Thanvantri, Venkat|
Keywords: Computer-aided design; Integrated circuits--Very large scale integration--Design and construction
|An evaluation of study design for estimating a time-of-day noise weighting - Fields, J. M|
The relative importance of daytime and nighttime noise of the same noise level is represented by a time-of-day weight in noise annoyance models. The high correlations between daytime and nighttime noise were regarded as a major reason that previous social surveys of noise annoyance could not accurately estimate the value of the time-of-day weight. Study designs which would reduce the correlation between daytime and nighttime noise are described...
Keywords: COMPUTER AIDED DESIGN; OPTIMIZATION; STRUCTURAL DESIGN CRITERIA; SUPERCONDUCTING MAGNETS; CURRENT DENSITY; PERFORMANCE TESTS
|Serrated-Planform Lifting-Surfaces - NON|
A novel set of serrated-planform lifting surfaces produce unexpectedly high lift coefficients at moderate to high angles-of-attack. Each serration, or tooth, is designed to shed a vortex. The interaction of the vortices greatly enhances the lifting capability over an extremely large operating range. Variations of the invention use serrated-planform lifting surfaces in planes different than that of a primary lifting surface...
Keywords: COMPUTER SYSTEMS DESIGN; MULTIDISCIPLINARY DESIGN OPTIMIZATION; COMPUTER AIDED DESIGN; AIRCRAFT DESIGN; DESIGN ANALYSIS; AEROSPACE VEHICLES
|Modeling the Volcanic Source at Long Valley, CA, Using a Genetic Algorithm Technique - Tiampo, Kristy F|
In this project, we attempted to model the deformation pattern due to the magmatic source at Long Valley caldera using a real-value coded genetic algorithm (GA) inversion similar to that found in Michalewicz, 1992. The project has been both successful and rewarding. The genetic algorithm, coded in the C programming language, performs stable inversions over repeated trials, with varying initial and boundary conditions...
Keywords: STRUCTURAL DESIGN; COMPUTER AIDED DESIGN; COMPUTER PROGRAMS; NASTRAN; PANELS; FAILURE; COSTS; TRADEOFFS
|Ceramic bearings for use in gas turbine engines - Zaretsky, Erwin V|
Three decades of research by U.S. industry and government laboratories have produced a vast body of data related to the use of ceramic rolling element bearings and bearing components for aircraft gas turbine engines. Materials such as alumina, silicon carbide, titanium carbide, silicon nitride, and a crystallized glass ceramic have been investigated. Rolling-element endurance tests and analysis of full-complement bearings have been performed...
Keywords: COMPUTER AIDED DESIGN; HELICOPTER DESIGN; HELICOPTER PERFORMANCE; SYSTEMS ANALYSIS; COMPUTER TECHNIQUES; SYSTEM EFFECTIVENESS; TECHNOLOGY ASSESSMENT
|Analytical approximation of a distorted reflector surface defined by a discrete set of points - Acosta, Roberto J.|
Reflector antennas on Earth orbiting spacecrafts generally cannot be described analytically. The reflector surface is subjected to a large temperature fluctuation and gradients, and is thus warped from its true geometrical shape. Aside from distortion by thermal stresses, reflector surfaces are often purposely shaped to minimize phase aberrations and scanning losses. To analyze distorted reflector antennas defined by discrete surface points, a numerical technique must be applied to compute an in...
Keywords: APPLICATIONS PROGRAMS (COMPUTERS); COMPATIBILITY; COMPUTER AIDED DESIGN; FINITE ELEMENT METHOD; ROTORS; STRESS ANALYSIS; TURBOMACHINERY; ASSEMBLIES; FLEXIBILITY
|User-friendly syntax directed input to a computer aided design system - Sherlock, Barbara J.|
Thesis Advisor(s): Ross, Alan. ; Second Reader: Rahe, George A
Keywords: Computer-aided design; Grammar, Comparative and general; Syntax; Automation; Modular construction; Microprocessors; Work; Systems engineering; Databases
|Modeling of Chill Down in Cryogenic Transfer Lines - Cross, Matthew F.|
A numerical model to predict chill down in cryogenic transfer lines has been developed. Three chill down cases using hydrogen as the working fluid are solved: 1) a simplified model amenable to analytical solution, 2) a realistic model of superheated vapor flow, and 3) a realistic model of initially subcooled liquid flow. The first case compares a numerical model with an analytical solution with very good agreement between the two...
Keywords: STRESS ANALYSIS; GEARS; GEAR TEETH; COMPUTER AIDED DESIGN; COMPUTER PROGRAMS; FINITE ELEMENT METHOD; MECHANICAL DRIVES
|Digital computer analysis and design of a subreflector of complex shape - Ludwig, A.|
Digital computer technique for computing scattered pattern of complex hyperboloid subreflector in Cassegrain antenna feed systems
Keywords: ANTENNA RADIATION PATTERNS; CASSEGRAIN ANTENNAS; SUBREFLECTORS; ANTENNA FEEDS; COMPUTER AIDED DESIGN; COMPUTER PROGRAMMING; DIGITAL COMPUTERS; HYPERBOLAS
|The Livingstone Model of a Main Propulsion System - Bajwa, Anupa|
Livingstone is a discrete, propositional logic-based inference engine that has been used for diagnosis of physical systems. We present a component-based model of a Main Propulsion System (MPS) and say how it is used with Livingstone (L2) in order to implement a diagnostic system for integrated vehicle health management (IVHM) for the Propulsion IVHM Technology Experiment (PITEX). We start by discussing the process of conceptualizing such a model...
Keywords: AERODYNAMICS; COMPUTATIONAL FLUID DYNAMICS; COMPRESSORS; COMPUTER AIDED DESIGN; DESIGN OPTIMIZATION; COMPRESSING; THREE DIMENSIONAL MODELS
|Analytical Modal Analysis for Thin-Film Flat Lenses - Hamidzadeh, Hamid R|
Due to strong potential applications and more demanding requirements imposed upon thin-film structures for space deployable, there has been increasing research and development activities during recent years in the field of vibration analysis of these types of structures. Moreover, interests in employing these structural components have received renewed emphasis in recent years within NASA and the Air Force...
Keywords: AEROSPACE SYSTEMS; DESIGN ANALYSIS; STRUCTURAL ANALYSIS; COMPUTER AIDED DESIGN; ENGINEERS; RELIABILITY; RISK
|The Pinhole/Occulter Facility - NON|
Scientific objectives and requirements are discussed for solar X-ray observations, coronagraph observations, studies of coronal particle acceleration, and cosmic X-ray observations. Improved sensitivity and resolution can be provided for these studies using the pinhole/occulter facility which consists of a self-deployed boom of 50 m length separating an occulter plane from a detector plane. The X-ray detectors and coronagraphic optics mounted on the detector plane are analogous to the focal plan...
Keywords: AIRCRAFT DESIGN; COMPUTER AIDED DESIGN; COMPUTER GRAPHICS; ANALYTIC GEOMETRY; COMPUTER PROGRAMS; FLOW DISTRIBUTION; SUBROUTINES
|Efficient algorithms and data structures for VLSI CAD - Cho, Seonghun|
Keywords: Integrated circuits--Very large scale integration--Design and construction--Data processing; Computer-aided design
|Measurement and modeling of dispersive pulse propagation in draw wire waveguides - Madaras, Eric I.|
An analytical model of dispersive pulse propagation in semi-infinite cylinders due to transient axially symmetric end conditions has been experimentally investigated. Specifically, the dispersive propagation of the first axially symmetric longitudinal mode in thin wire waveguides, which have ends in butt contact with longitudinal piezoelectric ultrasonic transducers, is examined. The method allows for prediction of a propagated waveform given a measured source waveform, together with the materia...
Keywords: PROTOTYPES; COMPUTER AIDED DESIGN; TOLERANCES (MECHANICS); LAYERS; COMPUTERIZED SIMULATION; NONDESTRUCTIVE TESTS; CURL (MATERIALS); THICKNESS
|Thermocouple assembly Patent - Turner, R. C|
Design and characteristics of thermocouples consisting of flexible tape for improved attachment to temperature source
Keywords: COMPUTER AIDED DESIGN; SPACE CHARGE; TRAVELING WAVE TUBES; COMPUTER PROGRAMS; PERFORMANCE PREDICTION
|Cockpit design and evaluation using interactive graphics - Evans, S. M|
A general overview of the characteristics of an interactive graphics system which was developed to assist cockpit engineers design and evaluate work stations was presented. The manikin used in this COMputerized BIomechanical MAN-model (COMBIMAN) was described, as are provisions for generating work stations and assessing interactions between man and environment. The applications of the present system are explained, and critiques of COMBIMAN are presented...
Keywords: ANALYZING; ANIMATION; COMPUTER AIDED DESIGN; COMPUTER TECHNIQUES; MOTION; COMPUTERIZED SIMULATION; ENGINEERING
|Computer-aided electronic circuit design. Conduction processes in thin films Status report, 1 Dec. 1965 - 31 May 1966 - NON|
Computer aided electronic circuit design and conduction processes in thin films
Keywords: CIRCUITS; THIN FILM; COMPUTER AIDED DESIGN; COMPUTER PROGRAMS; CONDUCTION; THIN FILMS; TRIODES; CIRCUIT; COMPUTER METHOD; CONDUCTION
|THE FOURTH NATIONAL CONFERENCE ON ACOUSTICS. VOLUME 3: PHYSIOLOGICAL, PSYCHOLOGICAL AND BIOLOGICAL ACOUSTICS - NON|
MEDICAL, SOCIAL, PSYCHOLOGICAL, AND PHYSIOLOGICAL PROBLEMS RAISED BY NOISE POLLUTION ARE REPORTED. MEDICAL ASPECTS OF AIRPORT NOISE, NOISE INDUCED HEARING LOSSES IN VARIOUS INDUSTRIES AND NOISE ANNOYANCE ARE DISCUSSED. THERE ARE ALSO SEVERAL ARTICLES ON THE BIOPHYSICAL AND MEDICAL EFFECTS OF ULTRASOUNDS.
Keywords: FLEXIBLE BODIES; SPACECRAFT CONTROL; SPACECRAFT MOTION; SPACECRAFT STABILITY; COMPUTER AIDED DESIGN; DIGITAL COMPUTERS; SPACECRAFT CONFIGURATIONS
|Deployment, Foam Rigidization, and Structural Characterization of Inflatable Thin-Film Booms - Schnell, Andrew R.|
Detailed investigation of the construction, packaging/deployment, foam rigidization, and structural characterization of polyimide film inflatable booms is described. These structures have considerable potential for use in space with solar concentrators, solar sails, space power systems including solar arrays, and other future missions. Numerous thin-film booms or struts were successfully constructed, inflated, injected with foam, and rigidized...
Keywords: COMPUTATIONAL FLUID DYNAMICS; COMPUTER AIDED DESIGN; COMPUTATIONAL GRIDS; DESIGN ANALYSIS; EULER EQUATIONS OF MOTION; AIRFOILS
|Efficient algorithms for VLSI CAD - Cheng, Yu Cheuk|
Keywords: Integrated circuits--Very large scale integration--Design and construction--Data processing; Computer-aided design
|23. Eng Parametric Dhaval B. Shah - Dhaval B. Shah|
Coupling is a mechanical device which used widely in many big and small scale industries. 3D solid modeling has been mostly used since last few years as a substitution and complementation of the conventional 2D drafting. However, in general, many draftsmen do not have the skills of performing such 3D modeling as well as it takes lots of time. One way of overcoming this problem is to develop a tool which can perform 3D modeling as well as 2D drafting automatically...
Keywords: Parametric Modeling; Computer Aided Design; Modeling and Drawing Automation; Flange Coupling